1983 |
72%
|
1982 |
72%
|
1981 |
72%
|
1981 |
69%
|
1975 |
64%
|
1982 |
67%
|
1977 |
63%
|
1979 |
57%
|
1982 |
66%
|
1970 |
80%
|